Dimethylformamide → Methyl N-methylindole-6-carboxylate

HRID 576633ノート

反応式

HRID 576633 の反応式
IC.N1C2[C:6](=[CH:7][CH:8]=[C:9]([C:12]([OH:14])=[O:13])[CH:10]=2)[CH:5]=C1.[C:15](=O)([O-])[O-].[K+].[K+].[CH3:21][N:22]([CH:24]=O)[CH3:23]>>[CH3:15][O:14][C:12]([C:9]1[CH:10]=[C:23]2[C:6]([CH:5]=[CH:24][N:22]2[CH3:21])=[CH:7][CH:8]=1)=[O:13]

参加物

5

反応物 4

HCID 6228DimethylformamideHCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 5952301H-indole-6-carboxylic acid

生成物 1

HCID 639843Methyl N-methylindole-6-carboxylate

実験手順

Iodomethane (2.3 mL, 36.9 mmol) was added to a suspension of indole-6-carboxylic acid (1.55 g, 9.62 mmol) and potassium carbonate (1.98 g, 14.3 mmol) in DMF (32 mL) under argon. The reaction was stirred at room temperature for 24 hr. The reaction was quenched with sat. NH4Cl and extracted with ethyl acetate (2×). The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated. The crude product was purified by flash chromatography on silica gel (0-60% EtOAc:Hexane). ESI-MS m/z 190 (MH)+.

後処理

  1. customThe reaction was quenched with sat. NH4Cl
  2. extractionextracted with ethyl acetate (2×)
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude product was purified by flash chromatography on silica gel (0-60% EtOAc:Hexane)

出典と根拠

ORDレコード
ord-0a2a662cff4e429cbe8f337f1575ba15
出典データセット
uspto-grants-2015_05
特許番号
US09040504B2

反応ノート

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